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close this bookBasic Laboratory Procedures in Clinical Bacteriology (WHO; 1991; 128 pages)
View the documentPreface
View the documentIntroduction
close this folderQuality assurance in microbiology
View the documentIntroduction
View the documentDefinitions
View the documentInternal quality control
View the documentExternal quality assessment
open this folder and view contentsPart I. Bacteriological investigations
open this folder and view contentsPart II. Essential media and reagents for isolation and identification of clinical pathogens
View the documentSelected further reading
View the documentSelected WHO publications of related interest
View the documentBack Cover


Quality assurance programmes are an efficient way of maintaining the standards of performance of diagnostic laboratories throughout the world, and of upgrading these standards where necessary. The quality of a laboratory test is generally considered to be synonymous with its reliability (accuracy) and its reproducibility (precision). However, in microbiology, quality goes beyond technical perfection to take into account the speed, the cost, and the usefulness or clinical relevance of the test. Laboratory tests in general are expensive and, with progress in medicine, they tend to use up an increasing proportion of the health budget.

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